Bender NGRM700 Manual - Página 6
Procurar online ou descarregar pdf Manual para Monitor Bender NGRM700. Bender NGRM700 8 páginas. Neutral grounding resistor monitor (ngr)
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Recommended minimum value R
Temperature range –40...+70 °C, field calibration at 25 °C
(Values shown in brackets: Limited temperature range 0...+40 °C, field calibration at 25 °C)
CD1000/CD1000-2
U
400 V
600 V
sys
I
NGR
231 Ω
346 Ω
1 A
46 Ω
69 Ω
5 A
(23 Ω)
35 Ω
10 A
(15 Ω)
(23 Ω)
15 A
—
(17 Ω)
20 A
—
—
25 A
—
—
30 A
—
—
40 A
—
—
50 A
—
—
100 A
Maximum trip times t(GFtrip) for the used CD-NGRM
The setting for t
GF trip
pling device. The table shows an overview of the t(GFtrip) settings for the coupling device used:
U
sys
400... 690 V
691...1000 V
1001...4300 V
4301...14550 V
14551...25000 V
Initial commissioning
The commissioning wizard (menu 8) queries the following parameters
(additional settings: menu 6):
6
NGRM700_D00292_03_Q_XXEN/09.2019
NGR
CD1000-2
690 V
1000 V
2400 V 4200 V 6000 V 6600 V 7200 V 11000 V 14400 V
398 Ω
577 Ω
1386 Ω
80 Ω
115 Ω
277 Ω
40 Ω
58 Ω
139 Ω
(27 Ω)
38 Ω
92 Ω
(20 Ω)
29 Ω
69 Ω
(16 Ω)
(23 Ω)
55 Ω
—
(19 Ω)
(46 Ω)
—
—
(35 Ω)
—
—
(28 Ω)
—
—
—
must not be longer than the maximum operating time of the CD series... cou-
Ground-fault trip settings (menu 6.5.6)
Coupling device
(Select Off for ground-fault alarm-only
CD1000
CD1000-2
CD1000
CD1000-2
CD5000
CD5000
CD14400
CD25000
CD25000
(tripping level 50 %)
CD5000
—
—
485 Ω
693 Ω
242 Ω
346 Ω
162 Ω
231 Ω
121 Ω
(173 Ω)
97 Ω
(139 Ω) (152 Ω) (166 Ω)
81 Ω
(115 Ω) (127 Ω) (139 Ω)
61 Ω
(87 Ω)
(48 Ω)
—
—
(24 Ω)
systems)
on or off
on
on or off
on or off
on
on
CD14400
—
—
—
762 Ω
831 Ω
1270 Ω
381 Ω
416 Ω
635 Ω
254 Ω
277 Ω
423 Ω
191 Ω
208 Ω
318 Ω
254 Ω
212 Ω
(95 Ω)
(104 Ω)
(159 Ω)
(76 Ω)
(83 Ω)
(127 Ω)
—
—
—
max. tGF trip (menu 6.5.7)
(For ground-fault tripping
CD25000
25000 V
—
—
1663 Ω
—
831 Ω
1443 Ω
554 Ω
962 Ω
416 Ω
722 Ω
333 Ω
577 Ω
277 Ω
481 Ω
208 Ω
361 Ω
(166 Ω)
289 Ω
(83 Ω)
(144 Ω)
systems)
24 h
300 s
24 h
24 h
60 s
10 s